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5. Effective? Prevent peculiar smell of air conditioner, especially? Weather? Change? Season, air conditioning? Pipelines are prone to musty smell? When the air conditioner is turned on, there will be. So in this situation? , need to choose sunny weather? Add, use air conditioner natural wind to blow it dry. Air conditioning can also be used? Hot air to dry, which can remove peculiar smell? Source, valid? Alleviate the peculiar smell in the car.Factory Pattern: Factory Pattern is a frequently used pattern. Classes implemented according to Factory Pattern can generate instances of one of a group of classes according to the provided data. Usually, this group of classes has a common abstract parent class and implements the same methods, but these methods perform different operations for different data. First of all, we need to define a base class. Subclasses of this class implement methods in the base class through different methods. Then you need to define a factory class that can generate different subclass instances according to conditions. After getting an instance of a subclass, developers can call methods in the base class regardless of which subclass instance is returned.一块橡皮引起的恋爱故事。青木暗恋桥下，桥下暗恋井田，而井田觉得青木喜欢自己？！三人的初恋结果到底如何呢。2001.07-千与千寻就怪你吧，那么晚才来运货。